Problems with OS installation in Early 2009 iMac 24 inch
How do I load a working El Capitan OS on an iMac I received from my son? Apple seems to have prevented limited updating from Leopard or Snow Leopard. I tried a Youtube method which did install El Capitan but AppStore doesn't connect, so its use is very restricted since much software won't install on Snow Leopard, needing a later OS version.
I would also like to add an SSD and tried loading Snow Leopard onto a USB connected SSD but when installation disc tries system says OS can't be installed.